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6x-4x-3-6=0
2x-9=0
b. 3x-9=0
c. 3x-6>5x-6
-2x>12
x<-6
d. 3/5x + 6/5 < 2x+4
3/5x -2x < 4-6/5
-7/5x<14/5 kali 5 smua
-7x<14
x>-2
6x - 2 = 4x + 6
6x - 4x = 6 + 2
2x = 8
x = 4
b. 6x + 3 = 3x + 12
6x - 3x = 12 - 3
3x = 9
x = 3
c. 3(x-2) > 5x - 6
3x - 6 > 5x - 6
3x - 5x > -6 + 6
-2x > 0
x<0
d. 3/5 (x + 2) < 2x + 4
Kedua ruas dikalikan 5,
3(x+2) < 10x + 20
3x + 6 < 10x + 20
3x - 10x < 20 - 6
-7x < 14
x > -2